Before there was anything in this world there were two beings their names were lost to time but their memories remain for what they created. One created light, the other darkness, one made the grass on the ground while the other made rot that grew throughout it, one made water, the other made waste that would infect the water one made life while the other made death. The life that one created helped the world around it. The other being did not like this and started to use the environment against them killing many but as time went on, they were slowly losing the battle against humanity and had another idea he took one of the humans the other had created and turned it into a monster.
It seemed unstoppable until the other being stepped in and allowed two humans to synchronize. By unlocking what they would call their spiritual energy one would turn into a weapon and be wielded by the other they vanquished the monstered and gave it the name of demon. The two humans that synchronized would go on to have two kids with similar abilities and were known as the children of god, more curses would be made as time went on and the children of god would fight them off. As time went on more and more humans with the ability to synchronize would come around.
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One of the original children of god would go on to make the exorcist society and as time went on they would grow to make a large society of exorcists and destroy curses, as generations went on new exorcists were gaining abilities some getting elemental abilities, others gaining some that increased their physical capabilities, and others gained the ability to process information faster and be able to calculate forms of plans better. The exorcist society began to split into different social systems the royal families, the ones who were from the original bloodline of the children of god, the mid-class the ones who had a normal amount and larger amount of spiritual energy, and the criminal syndicate the ones with low or no amounts of spiritual energy.
Some can be born with an extreme amount of spiritual pressure and the two that were born with this were Ryan Sheil and his Father Richard Michael sheil both were raised in the crime syndicate, and they both quickly climbed the exorcist ranks Ryan took his father's place as one of the four bishops, now Richard is the head of the exorcist society, but this story does not follow them but Ryans children Sully, Coby, and Robert, and they would be raised into the strongest excorsit team of all time.